The Mark's Cooling Fan Mods

Tomorrow's the day to get this new coolant in The Mark! :) I stopped by the shop, and talked to Ryan this past Saturday and dropped off the coolant, go over the instructions, and what ever else to plan for this coolant swap.

My big concern - I have an original 98 heater core, and am concerned about them trying to blow it out, or even touching it for that matter.

So, rather than taking the chance of it breaking, they might have to go through all two gallons of prep, and eight gallons of coolant to make sure all the old stuff is out of the system. Doing it that way is still cheeper than replacing the heater core - even at $33 bucks a gallon.

I also asked if Aric could data log the car before and after the flush to get coolant and any applicable temps like oil temp readings so I know where we are at since I do not have any real gauges in the car.

Depending on what the readings are, there might be a chance I might not have to install an oil cooler if the Royal Purple motor oil can handle the higher temps.

I want to hold off on the dyno tune until this summer, because right now, with the 160 t-stat in the car, it has a hard time getting up to normal temp on the gauge and staying there.

I also hope the Cobra pump and the 10% overdrive damper on the car now is enough to keep this fluid moving fast enough.
 
Roadboss said:
Mike, it's the IAT's that effect the tune. You want that Inter-cooler to turn out ice. LOL
Click to expand...


lol I take no chances with that motor, Charlie. :) I have seen way too many power adder cars blown up by guys that say they have a good tune in their car and all they do is the simplest of mods to the car.

Mostly by those Trilogy Marauder guys and their bullet proof box tunes and set-ups. The air is a little bit thinner here, and their fuel pumps are not up to snuff, and their IAT's out of control because of some mod not being done, or incorrectly = kaboom :(

Cost my buddy Gary $10k in repairs a couple years back at the shootout after he windowed his MM block on a like brand new 30k mile MM with a Trilogy kit on it he believed was all good. That just turned my stomach. I will gladly pay the $500 bucks for the piece of mind with a new tune after they are done messing with the car. :)
 
mlschultz said:
I will gladly pay the $500 bucks for the piece of mind with a new tune after they are done messing with the car. :)
Click to expand...

I fully agree with you Mike. :)

It would be uber cool for Aric to do a before/after datalog to see the effects of the Evans coolant on The Mark - he could likely get it published with a bit of help from Evans. ;)
 
Thanks, JP :) I will mention it to Aric and see what he says. This is their first Evans coolant experience, and I suspect there is some skepticism. lol I would like for them to become a dealer, so I have access to the coolant if ever needed. :)

I do want them to get coolant temp before and after readings at a minimum if they don't have time for everything else.
 
Just dropped the car off. Ryan said it should be done tomorrow. He said he will ask Aric to data log everything, and send me a copy.
 
They have not started work on The Mark yet other than data log. I have disputed their price quote yesterday, and I will talk to Aric today about it. So, they need to adjust their price, or I am either taking it elsewhere, or doing it myself.
 
OK, We have agreed on a price. :) It will be another week or two to fit me in again. I am glad, because I really did not want to do it, or have another shop get involved. I got way too much in this car to start screwing around with it.
 
All done! :) Just picked The Mark up from Aric's. This has been a real learning experience. Things just are not as easy as it seems. Thanks to Aric for the outstanding work as usual.

He has data logged the car before and after the coolant exchange, and another data log will be done one more time in the heat of the summer. There is a chance the 160* thermostat will need to be removed, and will have to run the car without a t-stat all together if it is determined it is a restriction to coolant flow.

Here are his findings. Keep in mind, these are measurements taken from a heavily modified 600 hp Mark VIII. YMMV :) The car was driven hard to build as much heat as possible before hand.

Initial test drive - 50/50 mix of water/green coolant with max a/c on

54* outside temp: ECT - 194*

After swap to Evans NPG+ Coolant, same conditions with max a/c on

52* outside temp: ECT - 230*

The stock temp gauge needle in the car looked to be in the same position on the dial in the before and after data logs.

I will keep a close eye on things for now, and if the temps start to move the gauge needle beyond half way, I hope it will plateau rather than continue to move towards the red part of the gauge. :)
 
Was the block flushed with water before they poured the Evens in? Just asking to see if they had left ANY 50/50 in there.
 
They followed the instructions provided by Evans. There was not a drop left of the old 50/50 stuff anywhere in the car when they were done.

They removed all of the block drains, which means a whole bunch of stuff including the starter, motor mounts, steering shaft, all the super charger tubing, etc., had to be removed from the car. This was a big deal, and big $$$ for him to spend a day and a half on the car to do it right and flush out every drop of 50/50. :)
 
If it stays at 230* in the summer with a/c on, I will be happy with that. Evans says I can run coolant temps as high as 280* without engine damage.

They do recommend a engine oil cooler to keep the oil temps at a max temp of 250* when running coolant temps at 280*. lol Just what I need... another cooler... :rolleyes: lol :)
 
I hesitate to say this, as your level of expertise is light years beyond mine, but you do realize that you lose a TON of cooling capacity by running without a fan shroud, right? I realize you have no room up there, but I dare say that's why you're running so hot. No amount of CFM is going to make it more efficient if you're only pulling air through the portion of the radiator directly in front of the fan.
 
Last edited:
I recall he has pusher fans installed as well.

I'm suprised the temps were that much different. I did expect them to be higher, just not that much I guess. Thanks to you and Aric for the datalogging. ;)
 
I agree with you Mark. It is on my list to get some kind of shroud fabricated and installed. :) I am also working on some type of air extractor to help move the air out of the engine compartment.

I do have two pusher fans like JP said, that cycle on when the a/c is turned on, along with the pull fan that is controlled by the PCM and VLCM. I believe Aric has the pull fan turning on early, and running on max speed.

What the data log did prove to me, the stock Mark temp gauge can fluctuate at least 40* and you would never notice the needle move at all from the center position.

That might also explain why these cars have a hard time recovering back to the middle of the gauge once it starts to climb past half way on the gauge since 50/50 coolant begins to boil at 255* @ 15psi per Evans.
 
That and the temp gauges that Ford has been using for years now doesn't REALLY reflect the temp of the coolent. It's an indication only. If you had a real temp gauge with numbers on it, you would see that as the temp starts climbing, when then dash gauge says N or what you would think operating temp is, the REAL gauge only shows a number much LOWER than what normal operating temp is. The dash gauge will stay at THAT "normal" spot even tho the REAL gauge fluctuates up and down as one would expect. Depending on the temp and condition of your thermostat.
 
I have logged and verified the Gen1 temp gauge readout. The Gen1 temp gauges are much more linear than the Gen2 gauges which are not much more than an idiot light.

Mike, I would seriously consider a good aftermarket temp gauge or an OBD-2 data display device if I were you.

Dakota Digital has real good stuff that can use your OEM temp sensor, but many OBD-2 data display devices are available.
 
Excellent advice, Guys! Thanks! :) I just ordered two - one for The Mark, and another for the Mercedes, the OBD2 monitor gauge. Can't beat the price on these either - $150 shipped for 2 of them.

Not sure if they will be used all the time yet, because I am one of those clutter freaks when it comes to my cars, but it is nice to know they are with me if something does not seem right.
 
You must log in or register to reply here.
Back
Top